How to choose a suitable Rockwell hardness tester?

Rockwell hardness is a commonly used hardness, and the hardness measured by a Rockwell hardness tester is called Rockwell hardness.
Rockwell hardness unit: HR. Rockwell hardness is generally divided into regular Rockwell hardness and superficial Rockwell hardness. Rockwell scales: There are 15 scales for regular Rockwell hardness, which are: HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HRL, HRM, HRR, HRP, HRS, and HRV. There are 15 scales for superficial Rockwell hardness, which are: 15N, 15T, 15W, 15X, 15Y, 30N, 30T, 30W, 30X, 30Y, 45N, 45T, 45W, 45X, and 45Y. Among them, the commonly used Rockwell scales for plastics are: HRS, HRL, HRM, and HRR. You can select a Rockwell hardness tester according to actual requirements.

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